Rivet-scaling tool



May 12, 1925.

" G. ANNESLEY HIVET SCALING TOOL Filed July 26. 1

v Geo/ye finnes/g v Patented May 12, 1925.

PATENT OFFICE.

GEORGE AN'NBSLEY, 0F PHILADELPHIA, PENNSYLVANIA.

RIVET-SCALING TOOL.

Application filed July 26, 1924. Serial No. 728,517.

enced in cleaning rust and scale from the heads of rivets connecting the parts so that the rivets will be accessible. An ob ect of the invention is to provide a simple and inexpensive article, which may be readily substituted for the ordinary riveting tool of a power actuated rivet setting device,

by means of which scale or rust may be eit'ectually removed from such rivet heads. 5 In the accompanying drawing:

Figure 1 is an elevation of the improved implement.

Figure 2 is a longitudinal sectional view.

Figure 3 is a face or end View of the-implement.

Referring to the drawing, the improved implen'ient comprises an elongated metal body 1 having at one end a reduced stem or shank 2 and at its opposite end a somewhat enlarged head 3. The. stem or shank 2is adapted to be engagedwith the reciprocating member of a power actuated riveting u'iechunisn i, conventionally illustrated at 4. In the end face oi the head 3 is formed a concave recess adapted to surround the head of the rivet from which rust or scale is to be removed. As shown, the marginal wall of this recess 6 is tapered providing a relatively narrow annular cutting edge 7, and the wall of the recess is provided with a series of slight depressions 8 each surrounded by or separated from the adjacent recesses by narrow webs 9, of such form as to provide a series of cutting edges.

Preferably, as shown, the depressions 8 are arranged symmetrically within the recess and the webs 9 divide the wall of the recess into a series of cells having somewhat the appearance of a honey-comb. When the improved implement is engaged with the reciprocating element of a. power actuated riveting device, being substituted for the commonly employed rivet set, and

the device is actuated the implement will be reciprocated and the cutting edges separating the several cells as well as the annular cutting edge 7 caused to exert a chipping action on any scale or rust which may be adhering to a rivet head, which is surrounded by the cavity in the implement head 1. Rapid reciprocation of the implement'by the power actuated r devices will cause the several cutting edgesto quickly remove any rust or scale which may be about the rivet head over which the implement is positioned.

It is believed that the operation and ad vantages of the implement will bereadily understood from the foregoing description taken in connection with the drawing.

While the improved implement has been referred to as particularly adapted for use in cleaning heads of boiler rivets, it may, of course, be employed for similar work in any other connection, such as on ships hulls. The implement could be used for removing rust or scale from any surface, as the annular coating edge 7 would eiiect the desired breaking of the rust, but the cavity 8 is especially designed to receive the enlarged heads of rivets, and adapts the implement for use on small curved or irregular surfaces.

Having thus described the invention, what is claimed is 1. An implement for the purpose described comprising an elongated body provided at one end with a recess adapted to receive the head of a rivet and having a series of closely adjacent depressions extending throughout the area of the wall thereof. I

2. An implement tor the purpose described comprising a stem, adapted to be engaged with the reciprocating element of a riveting tool, and a head provided in its end face with a recess adapted to receive the head of a rivet, the wall of said recess having formed therein a series of depressions separated by narrow webs.

3. An implement for the purpose described comprising a stem, adapted to be engaged with the reciprocating element 01": a riveting tool and a head provided in its end face with a recess adapted to receive the head of a rivet, and having a peripheral cutting edge, the wall of said recess being provided with a series of cells or depressions, each surrounded by a cutting edge, extending throughout the area within said peripheral edge. 10

In testimony whereof I have hereunto set my hand.

GEORGE ANNESLEY. 

